Abstract

1. Salmon calcitonin injected 5 min after a therapeutic dose of 32P in polycythaemic patients produced a significant increase in rate of disappearance of 32P from plasma when compared with a control group.

2. Salmon calcitonin injected 120 min after 32P injection did not modify the curve of 32P disappearance from plasma.

3. Salmon calcitonin injected 10 days after 32P injection did not produce any change in 32P plasma radioactivity or specific radioactivity.